question/type/calculatedmulti/backup/moodle2/restore_qtype_calculatedmulti_plugin.class.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * @package    moodlecore
  19  * @subpackage backup-moodle2
  20  * @copyright  2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
  21  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22  */
  23
  24
  25 defined('MOODLE_INTERNAL') || die();
  26
  27
  28 require_once($CFG->dirroot .
  29         '/question/type/calculated/backup/moodle2/restore_qtype_calculated_plugin.class.php');
  30
  31 /**
  32  * restore plugin class that provides the necessary information
  33  * needed to restore one calculatedmulti qtype plugin.
  34  *
  35  * @copyright  2010 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
  36  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  37  */
  38 class restore_qtype_calculatedmulti_plugin extends restore_qtype_calculated_plugin {
  39
  40     /**
  41      * Given one question_states record, return the answer
  42      * recoded pointing to all the restored stuff for calculatedmulti questions
  43      *
  44      * answer format is datasetxx-yy:zz, where xx is the itemnumber in the dataset
  45      * (doesn't need conversion), and both yy and zz are two (hypen speparated)
  46      * lists of comma separated question_answers, the first to specify the order
  47      * of the answers and the second to specify the responses.
  48      *
  49      * in fact, this qtype behaves exactly like the multichoice one, so we'll delegate
  50      * recoding of those yy:zz to it
  51      */
  52     public function recode_legacy_state_answer($state) {
  53         $answer = $state->answer;
  54         $result = '';
  55         // datasetxx-yy:zz format
  56         if (preg_match('~^dataset([0-9]+)-(.*)$~', $answer, $matches)) {
  57             $itemid = $matches[1];
  58             $subanswer  = $matches[2];
  59             // Delegate subanswer recode to multichoice qtype, faking one question_states record
  60             $substate = new stdClass();
  61             $substate->answer = $subanswer;
  62             $newanswer = $this->step->restore_recode_legacy_answer($substate, 'multichoice');
  63             $result = 'dataset' . $itemid . '-' . $newanswer;
  64         }
  65         return $result ? $result : $answer;
  66     }
  67 }